The switch device includes a control switch that turns on/off an electrical connection between an apparatus and the power supply, a condition judging circuit that judges conditions of driving the control switch, an electric wave reception circuit that receives an electric wave, and a power supply circuit that generates power from the electric wave received by the electric wave reception circuit. An electric wave transmission device that transmits an electric wave for making the switch device operate is arranged in a space, whereby the electric wave can be received by the electric wave reception device in the specific space. The switch device controls the control switch to be turned off/on when the electric wave is received. Alternatively, when the electric wave is not received, the switch device turns on/off the control switch.

The switch device includes a control switch that turns on/off an electrical connection between an apparatus and the power supply, a condition judging circuit that judges conditions of driving the control switch, an electric wave reception circuit that receives an electric wave, and a power supply circuit that generates power from the electric wave received by the electric wave reception circuit. An electric wave transmission device that transmits an electric wave for making the switch device operate is arranged in a space, whereby the electric wave can be received by the electric wave reception device in the specific space. The switch device controls the control switch to be turned off/on when the electric wave is received. Alternatively, when the electric wave is not received, the switch device turns on/off the control switch.

An AC power supply source switching apparatus includes a switch and a switch connecting a load to an AC power supply system and a DC secondary battery, respectively. When one switch, which is driven to turn off, did not actually turn off, the switch is driven to turn off again after being turned on. When an impedance of the load decreases and a load current flows in a load line, no AC voltage is developed on the load line. As a result, it is determined that the switch has actually turned off. Then the other switch is turned on thereby to switch over connection of the load.

An AC power supply source switching apparatus includes a switch and a switch connecting a load to an AC power supply system and a DC secondary battery, respectively. When one switch, which is driven to turn off, did not actually turn off, the switch is driven to turn off again after being turned on. When an impedance of the load decreases and a load current flows in a load line, no AC voltage is developed on the load line. As a result, it is determined that the switch has actually turned off. Then the other switch is turned on thereby to switch over connection of the load.

There is disclosed a power drop assembly which includes a housing and a reel positioned and rotatable within it. Preferably, the device determines, not only whether power is available, but how much power is available. Preferably, the power drop assembly also contains a processor and non-transitory storage medium, so that user settings and profiles as well as settings and profiles for the power drop assembly can be stored and run. Additionally, the power drop assembly preferably contains a wireless transceiver which connects to a home Wi-Fi network and then to a cloud account, user profiles and settings, and settings and profiles for the power drop assembly can be saved on the cloud account. In this way multiple users can use the power drop assembly without contradicting instructions or resetting the power drop assembly every time it is used.

There is disclosed a power drop assembly which includes a housing and a reel positioned and rotatable within it. Preferably, the device determines, not only whether power is available, but how much power is available. Preferably, the power drop assembly also contains a processor and non-transitory storage medium, so that user settings and profiles as well as settings and profiles for the power drop assembly can be stored and run. Additionally, the power drop assembly preferably contains a wireless transceiver which connects to a home Wi-Fi network and then to a cloud account, user profiles and settings, and settings and profiles for the power drop assembly can be saved on the cloud account. In this way multiple users can use the power drop assembly without contradicting instructions or resetting the power drop assembly every time it is used.

There is disclosed a power drop assembly which includes a housing and a reel positioned and rotatable within it. Preferably, the device determines, not only whether power is available, but how much power is available. Preferably, the power drop assembly also contains a processor and non-transitory storage medium, so that user settings and profiles as well as settings and profiles for the power drop assembly can be stored and run. Additionally, the power drop assembly preferably contains a wireless transceiver which connects to a home Wi-Fi network and then to a cloud account, user profiles and settings, and settings and profiles for the power drop assembly can be saved on the cloud account. In this way multiple users can use the power drop assembly without contradicting instructions or resetting the power drop assembly every time it is used.

A power drop assembly is disclosed which, in general, includes a power cord housing, a reel, a power cord, a female power outlet, an electrical input, switching circuitry, and a controller. The reel is positioned within the power cord housing. The reel is rotatably connected to the power cord housing. The power cord is mechanically attached to the reel. The female power outlet is mechanically and electrically attached to the power cord. The switching circuitry is electrically connected to the electrical input. The switching circuitry selectively, electrically connects the electrical input and the power cord. The switching circuitry is electrically connected to the power cord. The controller is communicatively connected to the switching circuitry for controlling the switching circuitry.

A power drop assembly is disclosed which, in general, includes a power cord housing, a reel, a power cord, a female power outlet, an electrical input, switching circuitry, and a controller. The reel is positioned within the power cord housing. The reel is rotatably connected to the power cord housing. The power cord is mechanically attached to the reel. The female power outlet is mechanically and electrically attached to the power cord. The switching circuitry is electrically connected to the electrical input. The switching circuitry selectively, electrically connects the electrical input and the power cord. The switching circuitry is electrically connected to the power cord. The controller is communicatively connected to the switching circuitry for controlling the switching circuitry.

A power drop assembly is disclosed which, in general, includes a power cord housing, a reel, a power cord, a female power outlet, an electrical input, switching circuitry, and a controller. The reel is positioned within the power cord housing. The reel is rotatably connected to the power cord housing. The power cord is mechanically attached to the reel. The female power outlet is mechanically and electrically attached to the power cord. The switching circuitry is electrically connected to the electrical input. The switching circuitry selectively, electrically connects the electrical input and the power cord. The switching circuitry is electrically connected to the power cord. The controller is communicatively connected to the switching circuitry for controlling the switching circuitry. The controller is also connected to circuitry programmed for regulating the amount of power available to the power cord. The switching circuitry and the regulating circuitry determine whether power is available and how much power is available. The switching circuitry may also be configured to act as a circuit breaker.